package com.itheima.info.manager.system.service;

import com.itheima.info.manager.system.domain.Student;

import java.util.ArrayList;

/**
 * 学生业务接口
 */
public interface IStudentService {

    //增
    void addStudent(Student student);
    //删
    void deleteStudent(String id);
    //改
    void updateStudent(String id,Student newStu);
    //查
    ArrayList<Student> findAllStudent();
    //判断学号是否存在的业务
    boolean isExits(String id);


}
